I agree with Tatooed MamaMeg.
Antibacterial Soap is a must! I lather up my cock, especially under the skin... and give it a good jerking, so I know I'm hitting everything.
Then, I pull the skin over the head (lathered) and I leave it alone for a minute while I lather other body parts... Then, rinse it just before you're ready to leave the shower.
Works every time.
ALSO: Do you pull the skin back when you pee? I had two brothers who did the "spray thing" without pulling it back... Not only does it leave a mess in the bathroom, urine stays under the skin and makes a very fowl smell.
Everybody who is uncut has a musky smell (which I think is heaven) 8-10 hours after their last shower... but, it should not be an overpowering nasty stench. | 
